Android animation does not officially provide the pause resume method.

This article mainly comes from: http://stackoverflow.com/questions/5828423/android-animation-pause-and-play-problem

Http://stackoverflow.com/questions/10006736/pause-and-resume-translate-animation

Android animation has been introduced in many articles.

Two instructions on Android Animation:

1. The animation we see is that the background resource of the control is floating, and the actual position of the control is not changed (you can verify it by adding a listener ).

2. The official website does not provide direct pause () and resume () excuses, but there are two existing excuses: setstarttime () and getstarttime (). Let's start from here.

The following describes a method:

Package COM. ideal. study; import android. view. animation. transformation; import android. view. animation. pause, resumepublic class translateanim extends {public translateanim (float fromxdelta, float toxdelta, float fromydelta, float toydelta) {super (fromxdelta, toxdelta, fromydelta, toydelta); // todo auto-generated constructor stub} private long melapsedatpause = 0; private Boolean mpaused = false; @ overridepublic Boolean gettransformation (long currenttime, transformation outtransformation) {If (mpaused & melapsedatpause = 0) {melapsedatpause = currenttime-getstarttime () ;}if (mpaused) setstarttime (currenttime-melapsedatpause); return. gettransformation (currenttime, outtransformation);} public void pause () {melapsedatpause = 0; mpaused = true;} public void resume () {mpaused = false ;}}

To call the pause () and resume () methods, you only need to create a new translateanim class.

The following is alphaanimation.

public class PausableAlphaAnimation extends AlphaAnimation {    private long mElapsedAtPause=0;    private boolean mPaused=false;    public PausableAlphaAnimation(float fromAlpha, float toAlpha) {        super(fromAlpha, toAlpha);    }    @Override    public boolean getTransformation(long currentTime, Transformation outTransformation) {         if(mPaused && mElapsedAtPause==0) {            mElapsedAtPause=currentTime-getStartTime();        }        if(mPaused)            setStartTime(currentTime-mElapsedAtPause);        return super.getTransformation(currentTime, outTransformation);    }    public void pause() {        mElapsedAtPause=0;        mPaused=true;    }    public void resume() {        mPaused=false;    }}